Wasn't trying to put anyone down, but to heat and quench an anvil that size will require one hell of a fire to get to critical temp, and a pretty elaborate setup to quench it correctly.
Proper weldment of an anvil face requires that the sub-face be built up slowly with regular electrodes, and then hardfacing electrodes used on the last part. The face of forged anvils, is a tool steel, and the body is usually wrought iron.
Would be a different story if the entire anvil is of the cast steel type.
I've never claimed to be an expert, like some do. Just commenting from the perspective of a blacksmith who has been doing this stuff for almost ten years, and has spent countless hours at conferences, and learning from masters along the way.
If I'm not helpful in my comments, then so be it. Nobody listens anyway.
I'll leave you to all the wrench forum resident blacksmith (amongst other trades) experts, then. Good luck, enjoy what you are doing, and most importantly, have fun.
I have better things to do, then be dismissed by those that know everything.